shrinkage cracking

shrinkage cracking

Cracking of a concrete structure or member owing to failure in tension caused by external or internal restraints as reduction in moisture content develops, or as carbonation in the concrete occurs, or both.

The authors believe that highly confined rubberised concrete can lead to highly deformable concrete elements and structures and that tyre steel and textile fibres can be used as concrete reinforcement to control shrinkage cracking.

Work is also ongoing at the University of Toronto and University of New Brunswick, looking at low temperature sulfate attack, potential interaction with deicers, and early age shrinkage cracking potential," Rupnow and Icenogle report.

Daly (1999) reported that restrained shrinkage-induced cracks cause 12% and 10-14% of deteriorations in the bridges in France and in Germany, respectively; in UK and Norway the shrinkage cracking is one of the major causes of such defects.

The objectives of this study were 1) to analyze the direct relationship between shrinkage cracking and transverse tensile characteristics in moisture saturated wood, and 2) to compare measured tensile strength with published data on the maximum shrinkage, compression yield, and relaxed compression yield stresses from the same wood species.

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